The International And Kenworth 2001 Through 2012 Heavy Duty Air Door Actuator is a reliable and durable product designed for HVAC systems. Made with high-quality plastic construction material and featuring electrical activation, this actuator is a direct replacement for the original equipment part. It has undergone rigorous on-vehicle testing to ensure proper fit and performance. With compatibility for a wide range of International and Kenworth models, including the 4200, 4300, 4400, 7400, 7500, 7600, 8500, 8500 TranStar, 8600, 8600 SBA, 8600 TranStar, C500, LoneStar, ProStar, T300, T600A, T800, W900, and WorkStar 7600, this actuator is a practical choice. Direct OE replacement numbers include Navistar: 3542575-C1 and 3542575-C2.